One of Ireland's oldest still functioning Cathedrals, St. Columb's was built
in what is rather obscurely referred to as "Planter's Gothic" between 1628
and 1633 and was the first Cathedral built in the UK after the Reformation.
The interior was largely rebuilt in the 19th Century when the dramatic gates
and the spire were also added.

The Cathedral played a pivotal part in the Siege of Derry in 1688. Cannon
were mounted on the roof and inside is the hollowed out cannon ball that
was fired into the walled city with a message to give up the Siege. The reply
which was sent back was "No Surrender", a buzzword for Loyalists ever since.

St. Columb's is one of Ireland's most interesting Cathedrals and one of the
highlights of a visit to Londonderry - it was a shame it was locked when
I visited on a Saturday afternoon.